package com.yusys;

public class Test {
    public static void main(String[] args) {
        String s = "123";
        s.trim();
        new Outer().m1();
    }
}

class Outer {
    private int n1 = 100;

    private void m2() {

    }

    public void m1() {
        class Inner {
            public void f1() {
                System.out.println("n1=" + n1);
                m2();
            }
        }
        Inner inner = new Inner();
        inner.f1();
    }
}
